Doesn't control ADHD as well as stimulants do, so it's used as a second-line medication.

Not a preferred drug to control blood pressure.

Can't be stopped suddenly, especially for blood pressure, since the blood pressure can dramatically increase.

How it works

Tenex (Guanfacine) is a centrally-acting alpha agonist medication. It lowers blood pressure by slowing down the heart rate and relaxing the blood vessels. It's not clear how Tenex (Guanfacine) works in ADHD, but it's used when stimulants haven't worked or can't be used in people.

Risks and Warnings for Tenex (Guanfacine)

People report having sleepiness or sedation while on Tenex (Guanfacine). You're at higher risk for this if you're taking other medications that have similar effects. Don't drive or do anything that requires concentration until you know how Tenex (Guanfacine) affects you.

Tip: Always talk with your doctor before you take any medication while pregnant.

FDA pregnancy category for Tenex

BProbably safe

Alcohol

Limit the amount of alcohol you drink while taking this.

Sleep

People report having sleepiness or sedation while on Tenex (Guanfacine). You're at higher risk for this if you're taking other medications that have similar effects. Don't drive or do anything that requires concentration until you know how Tenex (Guanfacine) affects you.

You can feel sleepy the first few times you take it, or when your dose is increased. Don't drive or do anything that requires concentration until you know how the medication affects your body.